A closure cap assembly for a container having a spout is described. The closure cap assembly includes a spout adapter and a cap. The spout adapter has a tubular body portion and a pull portion. The body portion is configured to be fixed to the spout of the container, and the pull portion is positioned in a flow passage of the body portion. A proximal end of the pull portion is connected to the body portion to form a seal across the flow passage. The distal end extends beyond the distal end of the body portion. The cap has a top end and a bottom end, is connected to the external surface of the body portion, and is connected to the pull portion in a way that the pull portion separates from the body portion as the cap is removed from the body portion.